Effect of electron injection for soot suppression in hydrocarbon flames

Numerical simulation of one-dimensional, laminar, premixed flat flame of acetylene was conducted to elucidate influence of ionic reactions on sooting characteristics. For reaction kinetics of the sooting flame, we adopted the mechanism developed by Frenklach et al. and the mechanism developed by Brown et al. The former consisted of recent developed in gas-phase reactions, and aromatic reactions. The latter included chemiionization, proton transfer, ion–molecule reactions, and charge recombination reactions. Numerical predictions were compared with previous experimental and numerical results. In addition, using the developed reaction mechanism, we simulated the plasma by corona discharge in flame. To compare the normal prediction with discharged prediction, we investigated the effect of plasma by corona discharge. Effect of electron injection in a hydrocarbon flame on soot precursor reduction was confirmed. In addition, the reaction “C6H5+ + e− = c-C6H4 + H” was intensified and more dominant through the electron injection.